As with any loud environment, it depends on who I'm with and what I'm doing. The mighty thundering of a waterfall can be overwhelming and impressive, in a good way...as long as I'm with someone I trust, not trying to have a conversation, and don't have to worry about navigating the space by myself.

When I'm with someone I trust, and don't have to worry about getting around on my own or having much of a conversation, relaxing into any loud environment, and just letting myself go, can provide a kind of release and feeling of freedom that's hard to describe. I don't have to do anything but experience the sound on it's own terms.

It depends on how loud and how much spatial differentiation is available. There is also a lot of personal tolerance and preference involved as well. I made the mistake of choosing a very loud Spanish tapas restaurant on a Friday night for a large group of blind people. Entering the space the sound was like a sonic waterfall. Almost immediately there were complaints about disorientation and feeling uncomfortable. The very loud white noise environment was intolerable and we had to leave.

Since then I have been more conscious about sound environment with blind people. Sound is a large part of balance for most blind people and they can find loud environments disorienting and even dizzying. My wife found water falls like Takakkaw falls in Yoho park to be overwhelming. She has the same experience at some loud concerts and restaurants. Other blind people I have met are better able to hand loud environments or appreciate them.

In general though blind people probably prefer environments where they can spatially orient and differentiate directionality of sounds. Next to a waterfall might be too much but a streamside with rapids upstream or a waterfall in the vicinity can be really enjoyable.